🚀 Essential Linux Command Collection for Big Data Development: A Must-Read Guide for Programmers! In big data development, Linux is our “fighter jet”.Core components like Hadoop, Hive, Kafka, Flink, and Spark all run in a Linux environment.If you are not familiar with Linux commands, troubleshooting issues, optimizing performance, or even simple data file operations can … Read more
Reading time required 5 minutes Speed reading only takes 2 minutes Introduction With the continuous development of automation control technology, PLCs (Programmable Logic Controllers) play an important role in industrial production. The real-time performance of PLC control systems, especially the calculation of cycle time, is crucial for optimizing system performance, improving control accuracy, and response … Read more
Recently, I have been working on modifying and migrating several scheduled task scripts, so I took the opportunity to review my knowledge of cron and systemd timers, summarizing it into a series of articles. Interested readers can click the links below to read the original articles. Thank you for your support. Detailed Explanation of cron … Read more
<span>top</span> is one of the most frequently used commands by operations engineers. It acts like an electrocardiogram for the system, allowing you to grasp the overall health of the machine within seconds. Today, we will thoroughly dissect this “classic tool that has stood the test of time”. 1. Applicable Scenarios: When to Use top? • … Read more
CPU usageis essentially the CPU resources consumed by the programs you are running, indicating the status of your machine’s running programs at a certain point in time. A higher usageindicates that your machine is running many programs at that time, while a lower usage indicates fewer programs. In the previous article, we discussed how to … Read more
Follow+Star PublicAccount to not miss exciting content Source | Embedded Miscellaneous In embedded development, logging and debugging are undoubtedly the most commonly used and practical debugging methods. However, many engineers may not fully leverage the power of logging! Today, I will share several logging techniques to help you progress from a “printf novice” to a … Read more
A 20,000-word system summary to help you achieve freedom with Linux commands. Basic Operations Shutdown and Restart Linux # Shutdown shutdown -h now # Restart shutdown -r now View System and CPU Information # View system kernel information uname -a # View system kernel version cat /proc/version # View current user environment variables env cat … Read more
The method for inspecting the VMware virtualization platform is a systematic process that involves multiple aspects and details. 1. Host and Version Check Check Host Status: Ensure all VMware ESXi hosts are running normally. Check for any alarms or error logs on the hosts. Software Version Consistency Check: Use vCenter Server (VS Client) to obtain … Read more
Notes Summary: In June, a graduate student from a certain university, focusing on confidential computing. Chen Weilin, currently engaged in R&D of 5G network acceleration solutions, and a part-time performance researcher. 1. Discussing the Observability of Mobile Performance Instructor Introduction: Xia Bing, currently employed at Honor as a senior performance R&D engineer.. 1. Overview Performance … Read more
Reading this article will take approximately 13 minutes. Source: Internet, please delete if infringing. Basic Operations Linux Shutdown and Restart # Shutdown shutdown -h now # Restart shutdown -r now View System and CPU Information # View system kernel information uname -a # View system kernel version cat /proc/version # View current user environment variables … Read more